public class TigerNumberDemo{
   public static void main(String[] args){
      System.out.printf("%d%n", 19); 
	  System.out.printf("%o%n", 19);
	  System.out.printf("%x%n", 19);
	  System.out.printf("%.2f%n", 19.234);
	  System.out.printf("%6.2f%n", 19.234);
	  System.out.println(1+2*3);
	  System.out.println((double)(1+2+3)/4);
	  System.out.println((1+2+3)/4);
   }
}